Formulation of new synthetic binders: Thermo-mechanical properties of recycled polymer/oil blends

Fuentes-Audén, Cristina; Martínez‐Boza, F.J.; Navarro, Francisco; Partal, P.; Gallegos, C.

doi:10.1016/j.polymertesting.2006.11.002

Cited by 25 publications

(10 citation statements)

References 21 publications

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“…The heat flow curves show two main thermal events. The first one occurs in the low temperature region and corresponds to the glass transition of the naphthenic oil [17], and the second one takes place in the high-temperature region, associated to the melting point of polymers used. As can be observed, the melting peak corresponding to recycled HDPE in the polymer/oil blend shows two endothermic events, which could be assigned to the occurrence of two average size crystallites formed [16,26].…”

Section: Resultsmentioning

confidence: 99%

“…In this sense, different polymers were found to be effective additives in the modification of lithium lubricating grease rheology, acting as fillers in the soap entangled microstructure. Nevertheless, up to now the use of polyolefin as a thickener agent in lubricating greases has not been adequately investigated and little attention has been paid to the optimization of the processing protocol necessary to form these dispersions, although several papers dealing with different properties of polyolefins/oil blends for different applications have been published [17,18]. Operating conditions in current technologies impose high demands on lubricating greases [19,20] and, consequently, finding a new thickener agent with suitable properties may create a new market niche with interesting perspectives in the future.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Formulation and processing of virgin and recycled polyolefin/oil blends for the development of lubricating greases

Martín‐Alfonso¹,

Romero²,

Valencia³

et al. 2013

Journal of Industrial and Engineering Chemistry

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Formulation and processing of virgin and recycled polyolefin/oil blends for the development of lubricating greases

Martín‐Alfonso¹,

Romero²,

Valencia³

et al. 2013

Journal of Industrial and Engineering Chemistry

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“…On the contrary, cooling rate significantly affects the viscosity of lubricating greases. Moreover, the degree of crystallinity of these recycled polymers is not significantly modified by the presence of oil (Fuentes-Auden et al, 2007). On the contrary, lower viscosity values were found when a constant cooling rate was applied during the whole cooling step, especially when a relatively high cooling rate (cycle 5) was selected.…”

Section: Viscous Flowmentioning

confidence: 90%

Influence of some processing variables on the rheological properties of lithium lubricating greases modified with recycled polymers

Martín‐Alfonso

Valencia

Sánchez

et al. 2012

IJMPT

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This work deals with the effect that some processing variables and type of mineral lubricating oil (naphthenic and paraffinic) used exert on the rheological properties of lubricating greases modified with recycled polymers. In particular, the optimisation of recycled polymer addition at different lubricating grease processing stages and cooling profiles were studied. The influence of processing variables was evaluated by performing small-amplitude oscillatory shear (SAOS), viscous flow and thermal analysis tests. From the experimental results obtained, it may be concluded that the addition of recycled polymer significantly increases the values of linear viscoelasticity functions, especially when added immediately after the saponification reaction, during the heating stage, or at the beginning of the cooling stage (180°C). A combined stepwise cooling ramp, first at a high rate and then at a low rate, is more effective to achieve higher values of the rheological functions than the application of constant cooling rates in the final processing stage. The values of the rheological functions decrease as base oil viscosity increases and increase when using a naphthenic instead of a paraffinic oil of similar viscosity. . (2012) 'Influence of some processing variables on the rheological properties of lithium lubricating greases modified with recycled polymers', Int. J. Materials and Product Technology, Vol. 43, Nos. 1/2/3/4, pp.184-200. Biographical notes: J.E. Martin-Alfonso holds a post-doctoral position at the Department of Chemical Engineering, University of Huelva. His research activity focuses on the rheology of modified lubricating greases. He obtained his PhD in 2010 and is co-author of 15 papers published in peer reviewed journals.Influence of some processing variables on the rheological properties 185 C. Valencia is a Lecturer of Chemical Engineering at UHU. She completed her PhD in 1994 and has been focusing on the microstructure, rheology and processing of different complex materials (colloids and gels, lubricants, etc.). She is a researcher in at least 30 funded R&D projects; she is also (co-) author of more than 50 papers in peer reviewed journals and more than 60 communications at international conferences.M.C. Sánchez is a Lecturer at the Department of Chemical Engineering, University of Huelva. She completed her PhD in 1997, and her research has been focusing on the rheology and processing of complex materials such as emulsions and gels, surfactant/water systems, colloidal suspensions, etc. She is a researcher in around 15 funded R&D projects; she is also (co-)author of around 40 papers and more than 30 communications at international conferences.J.M. Franco is a Full Professor and Head of the Chemical Engineering Department, University of Huelva, whose research activity is related with rheology and processing of non-Newtonian fluids and product development (including lubricating greases and gels). He has been a researcher in more than 50 funded research projects, author of more than 120 scientific works ...

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“…Under this assumption, the study of new asphalt binders that partially incorporate wastes is essential to reduce the use of bitumen directly obtained from oil sources, which is important for the sustainable development of road paving construction. Some studies related to this matter refer to non-petroleum binders [4] and synthetic binders made up of used oils, resins and polymers [5].…”

Section: Introductionmentioning

confidence: 99%

Improving Asphalt Mixture Performance by Partially Replacing Bitumen with Waste Motor Oil and Elastomer Modifiers

et al. 2017

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Featured Application: This work deals with the partial substitution of asphalt binder with waste motor oil and elastomer modifiers in order to obtain improved mixtures for pavement application purposes, which is also compared to an alternative mixture using bio-oil. The featured application of this solution is the production of new asphalt binders and mixtures for paving works in general. Abstract:The environmental concern about waste generation and the gradual decrease of oil reserves has led the way to finding new waste materials that may partially replace the bitumens used in the road paving industry. Used motor oil from vehicles is a waste product that could answer that demand, but it can also drastically reduce the viscosity, increasing the asphalt mixture's rutting potential. Therefore, polymer modification should be used in order to avoid compromising the required performance of asphalt mixtures when higher amounts of waste motor oil are used. Thus, this study was aimed at assessing the performance of an asphalt binder/mixture obtained by replacing part of a paving grade bitumen (35/50) with 10% waste motor oil and 5% styrene-butadiene-styrene (SBS) as an elastomer modifier. A comparison was also made with the results of a previous study using a blend of bio-oil from fast pyrolysis and ground tire rubber modifier as a partial substitute for usual PG64-22 bitumen. The asphalt binders were tested by means of Fourier infrared spectra and dynamic shear rheology, namely by assessing their continuous high-performance grade. Later, the water sensitivity, fatigue cracking resistance, dynamic modulus and rut resistance performance of the resulting asphalt mixtures was evaluated. It was concluded that the new binder studied in this work improves the asphalt mixture's performance, making it an excellent solution for paving works.

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Formulation of new synthetic binders: Thermo-mechanical properties of recycled polymer/oil blends

Cited by 25 publications

References 21 publications

Formulation and processing of virgin and recycled polyolefin/oil blends for the development of lubricating greases

Formulation and processing of virgin and recycled polyolefin/oil blends for the development of lubricating greases

Influence of some processing variables on the rheological properties of lithium lubricating greases modified with recycled polymers

Improving Asphalt Mixture Performance by Partially Replacing Bitumen with Waste Motor Oil and Elastomer Modifiers

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